ASTM A607 Steel Rod/Bar, grade 65

ASTM A607 Steel Rod, grade 65, cold rolled Product Information -:- For detailed product information, please contact sales. -: ASTM A607 Steel Rod, grade 65, cold rolled Synonyms -:- For detailed product information, please contact sales. -:

ASTM A607 Steel, grade 65, cold rolled Product Information -:- For detailed product information, please contact sales. -: ## **Product Technical Data Sheet: ASTM A607 Grade 65 Cold-Rolled Steel** ### **1. PRODUCT OVERVIEW** **ASTM A607 Grade 65 Cold-Rolled** is a **high-strength, low-alloy (HSLA) steel** produced by further processing hot-rolled coils through a cold-reduction mill at room temperature. This process significantly enhances the steel's surface finish, dimensional accuracy, and mechanical strength. As part of the ASTM A607 specification, it retains the defining characteristic of **improved atmospheric corrosion resistance** (approximately twice that of standard carbon steels) due to its mandated copper content, while achieving a **minimum yield strength of 65 ksi (448 MPa)**. The cold-rolling process imparts a smoother, more uniform surface and tighter tolerances, making it ideal for applications where appearance, precise forming, and high strength are paramount. ### **2. INTERNATIONAL STANDARDS & SPECIFICATIONS** * **Primary Standard:** **ASTM A607 / A607M** - "Standard Specification for Steel, Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, with Improved Atmospheric Corrosion Resistance." This standard explicitly covers both hot-rolled and cold-rolled conditions. * **Dimensional & Quality Standards:** * **ASTM A568** - Standard Specification for Steel, Sheet, Carbon, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirements (governs tolerances). * **ASTM A749** - Standard Specification for Steel, Strip, Carbon and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirements. * **Testing Standard:** **ASTM A370** - Standard Test Methods and Definitions for Mechanical Testing of Steel Products. ### **3. CHEMICAL COMPOSITION (Ladle Analysis)** The chemical composition for Grade 65 is identical in both hot-rolled and cold-rolled forms, as it is the fundamental recipe for achieving the steel's core properties. The composition meets the following requirements per ASTM A607. | Element | Symbol | Composition (%, max unless noted) | Role & Influence | | :--- | :--- | :--- | :--- | | Carbon | C | 0.22 | Provides base strength. Kept moderate for formability/weldability balance. | | Manganese | Mn | 1.35 | Solid solution strengthener; improves hardenability. | | Phosphorus | P | 0.04 | Increases strength and atmospheric corrosion resistance. | | Sulfur | S | 0.05 | Impurity; controlled for better ductility. | | Silicon | Si | 0.30 | Deoxidizer; contributes to strength. | | Copper | Cu | **0.20 min** | **Critical** for enhanced atmospheric corrosion resistance. | | Columbium (Nb) | Cb | 0.005 - 0.05* | Primary microalloying element for grain refinement and precipitation hardening. | | Vanadium | V | 0.01 - 0.10* | Alternative microalloying element for precipitation strengthening. | | Nitrogen | N | 0.015 | Supports nitride formation for strengthening. | **\*** Note: The standard requires a minimum combined content of Cb, V, and N to achieve the HSLA strengthening mechanism. The exact formulation is proprietary to the steel producer. ### **4. PHYSICAL & MECHANICAL PROPERTIES** #### **Mechanical Properties (Typical, as Cold-Rolled)** *Note: Cold rolling increases yield and tensile strength compared to the hot-rolled state due to work hardening.* | Property | Value (Imperial) | Value (Metric) | Condition / Note | | :--- | :--- | :--- | :--- | | **Yield Strength (min)** | 65 ksi | 448 MPa | As cold-rolled (full hard or similar temper). | | **Tensile Strength** | 75 - 95 ksi | 517 - 655 MPa | Higher and more consistent than hot-rolled. | | **Elongation in 2" (50mm)** | 12% - 18% (Typ.) | 12% - 18% (Typ.) | Lower than hot-rolled due to work hardening. | | **Modulus of Elasticity** | 29,000 ksi | 200 GPa | Unaffected by cold working. | | **Hardness (Rockwell B)** | 85 - 100 HRB | ~ | Varies with exact reduction and temper. | #### **Physical Properties (Typical)** | Property | Value | | :--- | :--- | | **Density** | 0.284 lb/in³ (7,850 kg/m³) | | **Thermal Conductivity** | ~28 W/m·K (at 100°C) | | **Coefficient of Thermal Expansion** | 11.7 x 10⁻⁶ /°C | | **Surface Finish (Ra)** | 0.8 - 2.5 µm (32 - 100 µin) | *Significantly smoother than hot-rolled.* | ### **5. KEY CHARACTERISTICS & PROCESSING** * **Superior Surface Finish:** Cold rolling produces a smooth, scale-free surface ideal for high-visibility applications or for receiving high-quality paint, plating, or other decorative finishes without extensive pre-treatment. * **Enhanced Strength & Hardness:** The cold reduction process increases dislocation density, resulting in higher yield and tensile strength, and greater hardness in the as-rolled state compared to its hot-rolled counterpart. * **Precise Dimensional Tolerances:** Thickness, width, and flatness are controlled to much tighter tolerances (per ASTM A568) than hot-rolled products, crucial for precision fabrication and stamping. * **Formability:** Exhibits good **uniform elongation** but lower **total elongation** than hot-rolled. Suitable for moderate bending and forming. For severe forming, a subsequent **annealing** process may be applied to restore ductility (producing "annealed" or "skin-passed" tempers). * **Weldability:** **Good to Fair.** The higher carbon equivalent and work-hardened structure require careful welding procedure development. Lower heat input processes (e.g., GMAW) are preferred. Preheating may be necessary for thicker gauges. * **Corrosion Resistance:** Inherently superior to plain carbon steels. The excellent surface finish further enhances the performance and adhesion of applied coatings. ### **6. PRODUCT APPLICATIONS** ASTM A607 Grade 65 Cold-Rolled is specified where **excellent surface quality, precise dimensions, and high strength** converge. * **Automotive Components:** Structural reinforcements (pillars, rails), chassis parts, seat frames, bumper beams, and safety-critical components requiring high strength-to-weight ratios. * **Appliance & Cabinet Manufacturing:** High-strength frames for agricultural machinery, enclosures for heavy-duty electrical equipment, and structural parts where appearance matters. * **Storage & Shelving Systems:** High-load warehouse racking uprights and beams, industrial shelving where slim profiles with high strength are needed. * **Building Products:** High-quality architectural sections, door frames, and curtain wall components that require a superior painted finish. * **Material Handling:** Forklift components, conveyor system structural parts, and custom fabrications for logistics equipment. ### **7. AVAILABILITY & TEMPER DESIGNATIONS** * **Forms:** Primarily supplied as **cold-rolled sheet and strip** in coils or cut lengths. * **Common Tempers:** Supplied in various tempers to suit forming needs: * **Full Hard (No. 1):** Maximum strength, minimal formability (as-cold-rolled). * **Skin-Passed (No. 2):** Slightly tempered for improved flatness and limited formability. * **Annealed (Soft):** Heat-treated to restore ductility for severe forming, then possibly skin-passed. --- **Disclaimer:** This data sheet summarizes information from the ASTM A607 standard and typical industry data. For project-critical specifications, always consult the official ASTM standard and the mill's certified test report for the specific material lot. Mechanical properties can vary based on the manufacturer's process and final temper. -:- For detailed product information, please contact sales. -: ASTM A607 Steel, grade 65, cold rolled Specification Dimensions Size： Diameter 20-1000 mm Length <4729 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: ASTM A607 Steel, grade 65, cold rolled Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A607 Steel Rod, grade 65, cold rolled -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A607 Steel Rod, grade 65, cold rolled -:- For detailed product information, please contact sales. -:

Packing of ASTM A607 Steel Rod, grade 65, cold rolled -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Rod drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1200 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition